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1

Calcium-binding proteins immunoreactivity in the preoptic area of the guinea pig (Cavia porcellus) during prenatal development

100%
Hermanowicz B., Bogus-Nowakowska K., Zakowski W., Robak A.
Acta Biologica Cracoviensia. Series Botanica. Supplement
|
2014
|
tom 56
|
nr 1
2

Distribution of cocaine- and amphetamine-regulated transcript (CART), neuropeptide Y (NPY) and galanin (GAL) in the pterygopalatine ganglion of the domestic duck (Anas platyrhynchos f. domestica)

100%
Radzimirska M., Bogus-Nowakowska K., Kuder T., Robak A.
Folia Histochemica et Cytobiologica
|
2016
|
tom 54
|
nr 1
3

The neuronal structure of the dorsal lateral geniculate nucleus in the guinea pig: Golgi and Kluver-Barrera studies

100%
Szteyn S., Bogus-Nowakowska K., Robak A., Najdzion J.
Folia Morphologica
|
2001
|
tom 60
|
nr 2
79-83
On the basis of Golgi and Klüver-Barrera preparations we have distinguished four types of neurons in the dorsal lateral geniculate nucleus of the guinea pig: 1. Fusiform neurons with 1–3 thick dendritic trunks arising from each pole of the soma. The dendritic trunks branch twice dichotomically. The branches sometimes show varicosities. 2. Pear-shaped cells. From one pole of the perikaryon one or two thick dendritic trunks arise, from the opposite pole an axon emerges. The ends of the dendritic branches divide in a tuft-like manner (a characteristic feature of the interneurons). 3. Rounded neurons with 4–7 dendritic trunks without cones. The dendritic trunks branch once or twice dichotomically and give finally 2–3 thin ramifications which show a varicose course and knob-like protuberances. 4. Triangular cells with 3 thick, conically arising dendritic trunks. They bifurcate dichotomically. The surface of the dendritic trunks and of their branches is smooth.
4

The neuronal structure of the ventromedial and infundibular nuclei in the guinea pig: Nissl and Golgi study

100%
Bogus-Nowakowska K., Szteyn S., Robak A.
Folia Morphologica
|
2001
|
tom 60
|
nr 4
309-315
The studies were carried out on the mesencephalons of adult guinea pigs. On the basis of the Golgi technique, as well as the Nissl and Klüver-Barrera methods, four types of neurons were distinguished in the ventromedial nucleus (VMH) and infundibular nucleus (Ni): 1. Rounded neurons (perikarya 12–18 µm) with 3–4 dendritic trunks, which divide once, twice or not at all. The dendritic branches possess varicosities and knob-like spines. These neurons predominate in VMH. 2. Fusiform neurons (perikarya 15–28 µm) with 2 dendritic trunks, which arise from the opposite poles of the cell body. Bead-like protuberances and knob-like processes are observed on the dendrites. These neurons are the most numerous in Ni. 3. Triangular neurons (perikarya 15–22 µm) possess three thick, conical dendrites, which bifurcate dichotomically. Bead-like appendages and knoblike processes were seen on the dendritic surface. 4. Multipolar neurons (perikarya 18–22 µm) with 4–5 dendritic trunks, which are poorly ramified. The dendritic branches are smooth, but varicosities can be observed on their surface. In all types of neurons an axon was observed to arise either from the dendritic trunk or from the soma.
5

Expression of calretinin and calbindin in the cingulate cortex of the guinea pig

100%
Hermanowicz-Sobieraj B., Bogus-Nowakowska K., Rowniak M., Robak A.
Acta Neurobiologiae Experimentalis
|
2017
|
tom 77
|
nr Suppl.1
INTRODUCTION: The cingulate cortex (CC), a part of the limbic cortex, is one of the major components of the Papez circuit. Mammalian cerebral cortex contains excitatory pyramidal neurons (70–80%), which use glutamate as neurotransmiter, and interneurons (20–30%), mostly inhibitory, using GABA as principal neurotransmiter. The maintenance a balance between these neurotransmitters is essential for proper functioning of neurons. GABAergic neurons deficit is often related to neurodegenerative disorders. Markers for GABAergic neurons are calcium-binding proteins: calretinin (CR) and calbindin (CB), which may act as calcium sensors as well as both fast and slow calcium buffers. AIM(S): The aim of the study was to describe the distribution of CR and CB and compare expression of both CaBPs at transcriptional and final product levels in the cingulate cortex of the adult guinea pig. METHOD(S): Genes expression of CR and CB was measured on mRNA by quantitative real-time PCR (qPCR) analysis. Total RNA was isolated using Total RNA Mini and then was reverse transcribed to cDNA using Maxima cDNA Synthesis Kit. qPCR was conducted using SYBR® Green JumpStartTMTaqReadyMixTM. To visualize CR and CB immunoreactivity frozen sections were undergone for routine single immunofluorescence labelling, using solution of antibodies raised against CR and CB. RESULTS: The immunohistochemical study indicates the presence of CR and CB in the whole CC. The number of CB-positive perikarya was lower than the CR ones. CR-positive perikarya in comparison to CB-positive, were more numerous in the superficial than in the deep layers of the CC. The qPCR analysis showed that the mRNA expession for CR was higher than for CB. CONCLUSIONS: The CB and CR mRNA expression level revealed by qPCR correlate with their protein abundance level revealed by immunohistochemistry. Calretinin expression was higher than calbindin at both levels. FINANCIAL SUPPORT: Co‑financing the scientific studies for young scientists or PhD students at the Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn (ID:12.620.026-300).
6

Developmental changes of calbindin immunoreactivity in the preoptic area of the male guinea pig (Cavia porcellus)

100%
Bogus-Nowakowska K., Hermanowicz-Sobieraj B., Rowniak M., Robak A.
Acta Neurobiologiae Experimentalis
|
2017
|
tom 77
|
nr Suppl.1
INTRODUCTION: Calbindin (CB) is one of the members of the EF-hand family of calcium-binding proteins which are involved in controlling intracellular calcium ion homeostasis. It may act as Ca2+ “fast” buffers and also as Ca2+ sensors. Intracellular calcium ions play an important role in immature and mature neurons. During early stages of development, calcium ions are involved e.g. in neuronal differentiation and plasticity, migration of neurons, or extension of neuronal processes. The preoptic area (POA) is a key structure which takes part in many autonomic functions (for example thermoregulation, thirst or hunger) as well as in reproduction and maternal behaviour, especially for pup retrieval as well as the onset of parental behaviour in females and males. AIM(S): The aim of the study was to examine the distribution of CB expression during the development of the preoptic area in the guinea pig by means of immunohistochemistry. METHOD(S): Brains from fetal stages (E50, E60), newborns (P0) and postnatal stages (P10, P20, P40, P100) were fixed in 4% paraformaldehyde in phosphate buffer and then cryoprotected. Frozen sections were processed for two immunohistochemical methods: an immunoenzymatic and immunofluorescence. RESULTS: Calbindin was highly expressed in the preoptic area of the male guinea pig, especially in the periventricular region. CB- immunoreactive (-ir) perikarya, fibers and punctate structures were observed at each examined stages. CB-ir perikarya were the most numerous at E50 and the least numerous at P100. The CB-ir neurons had oval, rounded or polygonal perikarya and some of them had processes of various length which emerged from perikarya. CB-ir fibers differed according to lengths. CONCLUSIONS: The highest expression of CB in the preoptic area at E50 coincides well with major developmental events (i.e. eyes opening) which in the guinea pig occur just before E50 stage.
7

The neuronal structure of the red nucleus in newborn guinea pigs

100%
Robak A., Szteyn S., Bogus-Nowakowska K., Rowniak M.
Folia Morphologica
|
2003
|
tom 62
|
nr 1
The preparations, stained according to the Nissl and Klüver-Barrera methods, were used to describe the topography and morphology of the red nucleus (RN) as well as the structure of the rubral perikarya in newborn (P0) guinea pigs. The Golgi impregnated preparations were used to distinguish types of neurons. RN is a uniform cell group and has the length from 740 to 860 µm. The Nissl stained perikarya were classified into three categories: big, medium-sized and small (A, B, C, respectively). The big perikarya, which contain a lot of tigroidal substance, were mainly observed at the caudal and ventral portions of RN. The small perikarya often have multiple nucleoli. The impregnated neurons were classified into 5 types: 1 — large, aspiny, rich-arborised multipolar cells, 2 — large and medium sized, spiny, rich-arborised fusiform or pear-shaped cells, 3 — medium-sized, spiny, rich-arborised rounded cells, 4 — medium-sized, spiny, richarborised bipolar cells, 5 — small and single medium-sized cells. The 5th type constitutes a heterogeneous population and also has neurons in different developmental stages. Intraspecies variations concerning both the length of RN and a number of the triangular perikarya of the red nucleus were observed in the examined guinea pigs.
8

Types of neurons of the subthalamic nucleus and zona incerta in the guinea pig - Nissl and Golgi study

100%
Robak A., Bogus-Nowakowska K., Szteyn S.
Folia Morphologica
|
2000
|
tom 59
|
nr 2
The studies were carried out on the subthalamus of adult guinea pigs. Golgi impregnation, Nissl and Klüver-Barrera methods were used for the study. In Nissl stained sections the subthalamic neuronal population consists of multipolar, fusiform, oval and pear-shaped perikarya. In two studied areas: nucleus subthalamicus (STN) and zona incerta (ZI) three types of neurons were distinguished. Type I, multipolar neurons with quadrangular, triangular or oval perikarya. They have 3–6 primary dendrites wich run slightly wavy and spread out in all directions. Type II, bipolar neurons with fusiform or semilunar perikarya, they have two primary dendrites. Type III, pear-shaped neurons with 1–2 dendritic trunks arising from one pole of the neuron. In all types of neurons axon emerges from the perikaryon or initial segment of a dendritic trunk and can be followed at a maximum distance of about 50 μm.
9

The morphology and cell structure of some nuclei in turberal region of Bison bonasus

100%
Robak A., Bogus-Nowakowska K., Szleyn S.
Folia Morphologica
|
1998
|
tom 57
|
nr 4
10

The neuronal structure of the substantia nigra in the guinea pig: Nissl and Golgi study

100%
Bogus-Nowakowska K., Szteyn S., Robak A.
Folia Morphologica
|
2000
|
tom 59
|
nr 4
The studies were carried out on the mesencephalons of adult guinea pigs. The preparations were made by means of the Golgi technique, as well as the Nissl and Klüver-Barrera methods. Four types of neurons were distinguished in the substantia nigra (SN) of the guinea pig: 1. Bipolar neurons of two kinds: the neurons of the first kind have elongated, fusiform perikarya (25–40 µm), whereas the cells of the second kind have rounded and oval perikarya (15–22 µm). These neurons possess two dendritic trunks which arise from the opposite poles of the cell body and run for a relatively long distance. The bipolar neurons are the most numerous in the pars compacta of SN. 2. Triangular neurons with three primary dendrites arising conically from a perikaryon (20–35 µm). They are the most often observed type of neurons in the pars reticulata of SN. 3. Multipolar neurons with quadrangular or oval perikarya (22–35 µm) and 4–5 dendritic trunks which spread out in all directions. 4. Pear-shaped neurons (perikarya 15–25 µm), which have one or two primary dendritic trunks arising from one pole of the cell body. In all the types of neurons an axon originates either from the dendritic trunk or from the soma and is observed only in its initial segment.
11

Phoenixin is present in hypothalamic neuroendocrine nuclei of the domestic pig-immunohistochemical study

88%
Hermanowicz B., Bogus-Nowakowska K., Palasz A., Wiaderkiewicz R., Robak A.
Acta Neurobiologiae Experimentalis
|
2015
|
tom 75
|
nr Supl.
BACKGROUND AND AIMS: Phoenixin (PNX) is one of the last revealed peptide in the rat hypothalamus. PNX so called a satiety molecule, takes part in such processes as the regulation of energy metabolism and also in reproduction. The aim of the study was to examine PNX immunoreactive structures (PNX-ir) and their distribution in the neuroendocrine part of the pig (Sus scrofa domestica) hypothalamus, because PNX was examined only in rodent brains. METHODS: Hypothalamic tissue was prepared by immunohistochemical techniques (immunofluorescence and DAB methods) with using Phoenixin-14 amide (H-079-01; Phoenix). RESULTS: PNX was immunodetected in neurons of the paraventricular (PVN) and supraoptic (SON) nuclei and also in neighbouring areas. PNX-ir cells had oval or multipolar perikarya with 1 to 4 visible primary dendrites. PNX-ir cells in the PVN were situated loosely at dorsal and ventral parts close to the third ventricle, whereas between these parts PNX-ir cells were numbered and clustered. PNX-ir structures with morphology like dendrites and also single fibres covered with varicosities resembled axons were observed in the neuropil of the PVN. PNX-ir cells in the SON were clustered on the medial side of the SON from which narrow band of the PNX-ir perikarya was directed to the lateral side, along the optic tract. PNX-ir perikarya in the SON have similar shapes as in the PVN, but some of them possess short protoplasmic irregular processes, what gives them irregular shapes. In the SON there was not observed immunoreactive structures in neuropil, as above described in the PVN. CONCLUSIONS: This is the first study which demonstrates the presence of PNX in axons. These results suggest that PNX in the PVN and SON may differ in signaling mechanism or acting as molecule-regulated neuroendocrine factor, but multidirectional functions of PNX complicate the understanding of the role played by this neuropeptide and further studies are needed.
12

The cytoarchitectonic and neuronal structure of the red nucleus in guinea pig: Nissl and Golgi studies

88%
Robak A., Szteyn S., Bogus-Nowakowska K., Doboszynska T., Rowniak M.
Folia Morphologica
|
2000
|
tom 59
|
nr 4
The present studies were carried out on the brains of adult guinea pigs, DunkinHartley strain. On the basis of preparations, they were stained according to the Nissl and the Klüver-Barrera method’s; a short description of the cytoarchitectonics and the characteristics of the rubral cells were written. The red nucleus (RN) of the guinea pig is 1.2 mm in length. Three cellular parts in RN, and three classes (A, B, C) of the rubral cells were distinguished. Taking into consideration the predominant cell size, RN was divided into magnocellular part (RNm), parvocellular part (RNp) and intermediate part (RNi). On the basis of Golgi impregnated preparations four neuronal types (I, II, III, IV) were distinguished. To sum up, in the guinea pig were observed: the large, mainly multipolar (type I) and bipolar (type II) spiny being coarse (class A) in Nissl material; the medium-sized, triangular, aspiny (type III) corresponding to the fine cells (class B); and the small, both spiny and aspiny neurons (type IV), which are the fine or achromatic cells (classes B or C) in Nissl stained slices. The highest degree of dendritic branching was observed in type I, whereas the lowest in cells of types III and IV.
13

A morphometric comparative study of the lateral geniculate body in selected placental mammals: the common shrew, the bank vole, the rabbit, and the fox

76%
Najdzion J., Wasilewska B., Bogus-Nowakowska K., Rowniak M., Szteyn S., Robak A.
Folia Morphologica
|
2009
|
tom 68
|
nr 2
The lateral geniculate body (LGN) was morphometrically examined and compared in representatives of four mammalian orders (Insectivora, Rodentia, Lagomorpha, and Carnivora). In each studied species, the lateral geniculate body was divided into two distinct parts: the dorsal nucleus (LGNd) and the ventral nucleus (LGNv). The lateral geniculate body of the common shrew and the bank vole are very similar in appearance and nuclear pattern. The dorsal and ventral nuclei of these two species also have the most similar statistical characteristics. The lateral geniculate body of the fox has the most complicated morphology and multilayered structure. A significant disproportion was observed between the sizes of both geniculate nuclei in the fox, where the dorsal nucleus definitely surpassed the ventral nucleus in terms of volume. With the exception of the fox, the neuronal density of the LGN nuclei was negatively correlated with the volumes of the LGN. The mean neuronal size of the LGNd and LGNv, which was the resultant of the length, width, area, and circumference of the soma, grew correlatively to the volumes of these nuclei. In all examined species, somas of the LGNd neurons are distinctly larger and have more similar shapes than the LGNv perikarya. In addition, the numerical density of neurons in the ventral nucleus is significantly higher than in the dorsal nucleus. All these morphometric parameters clearly differentiate the LGNd from the LGNv (Folia Morphol 2009; 68, 2: 70–78).
14

Calcium - binding proteins immunoreactivity in Cavia porcellus (Rodentia) hippocampus 30 days after postconception

76%
Robak A., Hermanowicz-Sobieraj B., Bogus-Nowakowska K., Rowniak M., Wasilewska B., Kolenkiewicz M.
Acta Biologica Cracoviensia. Series Botanica. Supplement
|
2018
|
tom 60
|
nr 1
15

Distribution of cocaine- and amphetamine - regulated transcript in the hippocampal formation of the guinea pig and domestic pig

76%
Kolenkiewicz M., Robak A., Rowniak M., Bogus-Nowakowska K., Calka J., Majewski M.
Folia Morphologica
|
2009
|
tom 68
|
nr 1
This study provides a detailed description concerning the distribution of cocaineand amphetamine-regulated transcript (CART) subunits — CART₆₁₋₁₀₂ and rhCART₂₈₋₁₁₆ — in the hippocampal formation (HF) of the guinea pig and domestic pig, focussing on the dentate gyrus (DG) and hippocampus proper (HP). Although in both studied species CART-immunoreactive (CART-IR) neuronal somata and processes were present generally in the same layers, some species-specific differences were still found. In the granular layer (GL) of both species, the ovalshaped neurons and some thick varicose fibres were encountered. In the guinea pig there was an immunoreactive “band of dots”, probably representing crosssectioned terminals within the DG molecular layer (MOL), whereas in the domestic pig, some varicose fibres were detected, thus suggesting a different orientation of, at least, some nerve terminals. Furthermore, some CART-positive cells and fibres were observed in the hilus (HL) of the guinea pig, whereas in the analogical part of the domestic pig only nerve terminals were labelled. In both species, in the pyramidal layer (PL) of the hippocampus proper, CART- -IR triangular somata were observed in the CA3 sector, as well as some positive processes in MOL; however, a few immunoreactive perikarya were found only in the CA1 sector of the guinea pig. As regards the localization patterns of two isoforms of CART in the guinea pig, both peptide fragments were present simultaneously in each of the labelled neurons or fibres, whereas in the domestic pig three types of fibres may be distinguished within the area of the DG. In the hilus and MOL of the dentate gyrus, there were fibres expressing both isoforms of CART in their whole length (fibres of the first type). Fibres of the second type (in GL) coexpressed both peptides only on their short segments, and the last ones (in MOL) expressed solely rhCART₂₈₋₁₁₆. These results indicate that the distribution of the two CART isoforms are specifically related, thus the relationship between the two CART isoforms may imply different metabolic profiles of CART-expressing neurons. (Folia Morphol 2009; 68, 1: 23–31)
16

The neuronal structure of the preoptic area in the mole and the rabbit: Golgi and Nissl studies

76%
Bogus-Nowakowska K., Robak A., Szteyn S., Rowniak M., Najdzion J., Wasilewska B.
Folia Morphologica
|
2006
|
tom 65
|
nr 4
367-376
The present studies were carried out on the brains of the adult mole and rabbit. The preparations were made by means of the Golgi technique and the Nissl method. Two types of neurons were distinguished in the preoptic area (POA) of both species: bipolar and multipolar. The bipolar neurons have oval, fusiform or round perikarya and two dendritic trunks arising from the opposite poles of the cell body. The dendrites bifurcate once or twice. The dendritic branches have swellings, single spine-like and filiform processes. The multipolar neurons usually have triangular and quadrangular perikarya and from 3 to 5 dendritic trunks. The dendrites of the mole neurons branch sparsely, whereas the dendrites of the rabbit neurons display 2 or 3 divisions. On the dendritic branches varicosities and different protuberances were observed. The general morphology of the bipolar and multipolar neurons is similar in the mammals studied, although the neurons of the rabbit POA display a more complicated structure. Their dendritic branches show more divisions and possess more swellings and different processes than the dendrites of the neurons of the mole POA. Furthermore, of the multipolar neurons only the dendrites in POA of the rabbit were observed to have a rosary-like beaded appearance.
17

A morphometric study of the preoptic area of the guinea pig

76%
Bogus-Nowakowska K., Robak A., Szteyn S., Rowniak M., Wasilewska B., Najdzion J.
Folia Morphologica
|
2010
|
tom 69
|
nr 1
The aim of the study was to provide the topography and morphometric characteristics of the preoptic area (POA) of the guinea pig. The study was carried out on the brains of sexually mature guinea pigs of both sexes. A uniform procedure was followed in the study of the paraffin-embedded brain tissue blocks of males and females. The blocks were cut in the coronal plane into 50 μm sections and stained according to the Nissl method. The guinea pig POA consists of four parts: the medial preoptic area (MPA), lateral preoptic area (LPA), periventricular preoptic nucleus (PPN), and median preoptic nucleus (MPN). The topography and general structure of POA parts are similar in males and females. However, the PPNa cells of females are more intensely stained and are more densely packed than the PPNa cells of males. For morphometric analysis, the MPA and LPA as well as PPN and MPN were considered respectively as uniform structures, namely MPA-LPA and PPN-MPN. The statistical analysis showed that the volume of the PPN-MPN was larger in males than in females, whereas the MPA-LPA volume did not differ between the sexes. Moreover, the numerical density and the total number of neurons were statistically larger in males than in females in both the MPA-LPA and PPN-MPN. The parameters describing POA neurons were larger for MPA-LPA neurons in comparison with the PPN-MPN neurons. However, in this respect no sex differences were observed in both studied complexes. (Folia Morphol 2010; 69, 1: 15–23)
18

Morphometric comparative study of the striatum and globus pallidus of the common shrew, bank vole, rabbit, and fox

76%
Wasilewska B., Najdzion J., Rowniak M., Bogus-Nowakowska K., Nowakowski J. J., Robak A.
Bulletin of the Veterinary Institute in Puławy
|
2012
|
tom 56
|
nr 3
The morphology of the striatum (St, caudoputamen complex) and globus pallidus (GP) was studied by stereological methods in representatives of four mammalian orders (Insectivora, Rodentia, Lagomorpha, Carnivora). The aim of our study was to give the first detailed morphometric characteristics of the St and GP in the animals. The paraffin-embedded brain tissue blocks were cut in the coronal plane into 50 fim sections, which were stained for Nissl substance. The morphometric analysis of the St and GP has included such parameters as the volume, numerical density, and total number of neurons. The increase in the volume of the St and GP was accompanied by an increase in the total number of neurons and a decrease in their numerical density. The percentage contribution of the GP volume in the corpus striatum shows progressive traits in the common shrew and fox.
19

The neuronal structure of the dorsal nucleus of the lateral geniculate body in the common shrew [Sorex araneus] and the bank vole [Clethrionomys glareolus] : Golgi and Nissl studies

76%
Najdzion J., Wasilewska B., Szteyn S., Robak A., Bogus-Nowakowska K., Rowniak M.
Folia Morphologica
|
2006
|
tom 65
|
nr 4
352-358
The topography and neuronal structure of the dorsal nucleus of the lateral geniculate body (GLd) of the common shrew and the bank vole are similar. The lateral geniculate body of both the species examined has a homogeneous structure and no observable cytoarchitectonic lamination. On the basis of the shape of the dendritic arbours as well as the pattern of dendritic arborisations the following two types of neurons were distinguished. Type I “bushy” neurons that have multipolar or round perikarya (common shrew perikarya 9–12 µm, bank vole perikarya 10–13 µm), with 4–6 short thick dendritic trunks that subdivide into many bush-like branches. The dendritic trunks are smooth, in contrast to the distal branches, which are covered with numerous spine-like protrusions of different lengths and forms. An axon emerges from the soma, sometimes very close to one of the primary dendrites. The type I neurons are typically projection cells that send their axons to the primary visual cortex. These neurons predominate in the GLd of both species. Type II neurons, which have an elongated soma with primary dendrites arising from opposite poles of the perikaryon (common shrew perikarya 8–10 µm, bank vole perikarya 9–11 µm). The dendritic arbours of these cells are less extensive and their dendrites have fewer spines than those of the type I neurons. Axons were seldom observed. The type II neurons are presumably interneurons and are definitely less numerous than the type I neurons.
20

A morphometric analysis of the geniculate bodies in selected mammalian species

76%
Najdzion J., Wasilewska B., Bogus-Nowakowska K., Rowniak M., Zakowski W., Robak A.
Bulletin of the Veterinary Institute in Puławy
|
2012
|
tom 56
|
nr 2
Unbiased stereological methods were used to examine and compare morphometrically the geniculate bodies (GB) in representatives of four mammalian orders (Insectivora, Rodentia, Lagomorpha, and Carnivora). The significant disproportion was observed between the relative sizes of both geniculate nuclei and their neuronal populations in the common shrew and the bank vole. The medial geniculate body (MGB) in the common shrew definitely surpassed the lateral geniculate body (LGB) in terms of percentage volume and percentage number of neurons. The volume of the GB and their nuclei correlated with their mean neuronal populations, whereas the negative correlation was observed between volumes and neuronal density; however, not as distinct as in the non-sensory brain structures. In all examined species, the LGB always had a higher numerical density than the MGB, while the MGB neurons were always distinctly larger than that of the LGB, which clearly differentiated both neuronal complexes. Analysis of these data shows that the GB differs in terms of the morphometric characteristics in the studied species.
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